Microsoft SharePoint 2007 Setup Error: How to Fix the Problem

If you are installing Microsoft SharePoint 2007 and you run into the following error message: "this product requires ASP.NET v2.0 to be set to 'Allow' in the list of Internet Information Services (IIS) Web Server Extensions," don't be too worried. It's actually a pretty simple fix. Just a simple command line execution that will install the .NET 2.0 and allow you to enable it in IIS will do the trick. Follow the steps below, and you should be ready to install in about 2 minutes.

First click on the Start button navigate to the Run option and click it. In the window that opens up type the letters CMD and hit enter, this will open up a command window. First thing is to get to the directory where the .NET 2.0 is stored, typically it's under C:WINDOWSMicrosoft.NETFramework v2.0.50727, to get to this you can type

CD Windows (then hit enter)
CD Microsoft.NET (then hit enter)
CD Framework (then hit enter)
CD v2.0.50727 (then hit enter)

Once you get to the .NET 2.0 directories you will want to run a simple command that will register the .NET 2.0 with IIS.

Type aspnet_regiis -I and hit enter

It will begin its install, wait until it says it has finished the install and then you can type exit and hit enter.

The above steps fix the problem about 90% of the time but sometimes you need to do an additional step, just in case lets check your IIS web extensions, to be sure that the ASP.NET is set to allow.

To do this you will go to Start, Administrative Tools, and Internet Information Services Manager (IIS). Once IIS opens you will want to click on the Web Service Extensions Folder and check to make sure that ASP.NET v2.0 is set to allow. If it is not you will want to click on the icon labeled ASP.NET v2.0 and click the allow button. (see screenshot for visual on this step)

Now you should be able to install your Microsoft SharePoint 2007 with no problems. Hope this helps you with this common Microsoft SharePoint 2007 Setup error.